Enable use of Docker networking with the --x-networking flag

Signed-off-by: Aanand Prasad <aanand.prasad@gmail.com>

script/build-windows.ps1

@@ -42,15 +42,14 @@ Get-ChildItem -Recurse -Include *.pyc | foreach ($_) { Remove-Item $_.FullName }
 virtualenv .\venv
 
 # Install dependencies
-.\venv\Scripts\pip install pypiwin32==219
-.\venv\Scripts\pip install -r requirements.txt
-.\venv\Scripts\pip install --no-deps .
-
 # TODO: pip warns when installing from a git sha, so we need to set ErrorAction to
 # 'Continue'.  See
 # https://github.com/pypa/pip/blob/fbc4b7ae5fee00f95bce9ba4b887b22681327bb1/pip/vcs/git.py#L77
 # This can be removed once pyinstaller 3.x is released and we upgrade 
 $ErrorActionPreference = "Continue"
+.\venv\Scripts\pip install pypiwin32==219
+.\venv\Scripts\pip install -r requirements.txt
+.\venv\Scripts\pip install --no-deps .
 .\venv\Scripts\pip install --allow-external pyinstaller -r requirements-build.txt
 
 # Build binary